From bfa5de7eccf4604ff8217f619e9685a09e80d545 Mon Sep 17 00:00:00 2001
From: Pixel <Pixel>
Date: Fri, 27 Sep 2002 12:17:57 +0000
Subject: The week-without-the-network changes

---
 lib/lzss.cpp | 38 +++++++++++++++++++++-----------------
 1 file changed, 21 insertions(+), 17 deletions(-)

(limited to 'lib/lzss.cpp')

diff --git a/lib/lzss.cpp b/lib/lzss.cpp
index b57f325..a991f07 100644
--- a/lib/lzss.cpp
+++ b/lib/lzss.cpp
@@ -26,12 +26,11 @@
 #include "lzss.h"
 #include "Handle.h"
 
-int lzss_maxsize = 18;
-int lzss_maxptr = 0x0fff;
-int tolerate = 1;
-int blockb = 0;
+lzss::lzss() : tolerate(1), blockb(0), scheme(schemes[0]), lzss_maxsize(18), lzss_maxptr(0x0fff) {
+    compute_limits();
+}
 
-scheme_t schemes[] = {
+const lzss::scheme_t lzss::schemes[] = {
 /*    Nom            1  I  J  O  N 16  P  F     W   Lm1 Ls1   Lm2 Ls2   Jm1 Js1   Jm2 Js2   Fm1 Fs1   Fm2 Fs2   Vm1 Vs1   Vm2 Vs2 */
     {"Xenogears",    1, 0, 0, 1, 0, 0, 0, 0,    0, 0x00,  0, 0xf0, -4, 0xff,  0, 0x0f,  8, 0x00,  0, 0x00,  0, 0x00,  0, 0x00,  0},
     {"DBZ RPG",      0, 0, 0, 0, 0, 0, 0, 0,    0, 0x0f,  0, 0x00,  0, 0xf0, -4, 0xff,  4, 0x00,  0, 0x00,  0, 0x00,  0, 0x00,  0},
@@ -46,20 +45,18 @@ scheme_t schemes[] = {
     {0            ,  0, 0, 0, 0, 0, 0, 0, 0,    0,    0,  0,    0,  0,    0,  0,    0,  0, 0x00,  0, 0x00,  0, 0x00,  0, 0x00,  0}
 };
 
-scheme_t scheme = schemes[0];
-
-char swap_bits(char i) {
+Byte lzss::swap_bits(Byte i) {
     i = ((i >> 1) & 0x55) | ((i << 1) & 0xaa);
     i = ((i >> 2) & 0x33) | ((i << 2) & 0xcc);
     i = ((i >> 4) & 0x0f) | ((i << 4) & 0xf0);
     return i;
 }
 
-unsigned int shift(unsigned int c, int s) {
+unsigned int lzss::shift(unsigned int c, int s) {
     return s > 0 ? (c << s) : c >> (-s);
 }
 
-void compute_limits(void) {
+void lzss::compute_limits(void) {
     unsigned char val1, val2;
     
     val1 = val2 = 0xff;
@@ -95,7 +92,7 @@ void compute_limits(void) {
     printm(M_INFO, "Computed values: maxsize = %i, maxptr = 0x%06x\n", lzss_maxsize, lzss_maxptr);
 }
 
-unsigned long lzss_decomp(Handle * f_source, Handle * f_cible, long true_length)
+unsigned long lzss::lzss_decomp(Handle * f_source, Handle * f_cible, long true_length)
 {
     unsigned char bitmap, fbitmap;
     unsigned char valeur;
@@ -242,11 +239,11 @@ unsigned long lzss_decomp(Handle * f_source, Handle * f_cible, long true_length)
     return length;
 }
 
-unsigned char lzss_rd(unsigned char * t, long p) {
+unsigned char lzss::lzss_rd(unsigned char * t, long p) {
     return ((p < 0) ? 0 : (t[p]));
 }
 
-long lzss_comp_strstr(unsigned char * needle, unsigned char * r, long * l, long sp) {
+long lzss::lzss_comp_strstr(unsigned char * needle, unsigned char * r, long * l, long sp) {
     char redo[256];
     long length, i, p, ptr, maxlength;
     
@@ -291,9 +288,7 @@ long lzss_comp_strstr(unsigned char * needle, unsigned char * r, long * l, long
     return ptr;
 }
 
-long blk, bitmap_count;
-
-unsigned char * lzss_memcomp(unsigned char * r, long * l, long * delta) {
+unsigned char * lzss::lzss_memcomp(unsigned char * r, long * l, long * delta) {
     unsigned char bitmap, * comp;
     long ptr, needle, needle_length, comp_ptr, bitmap_ptr, val1, val2;
     long jump, farest, remaining;
@@ -418,7 +413,7 @@ unsigned char * lzss_memcomp(unsigned char * r, long * l, long * delta) {
     return comp;
 }
 
-void lzss_comp(Handle * f_source, Handle * f_cible, long * delta) {
+void lzss::lzss_comp(Handle * f_source, Handle * f_cible, long * delta) {
     long length = f_source->GetSize(), l;
     unsigned char * r = (unsigned char *) malloc(length), * c;
     
@@ -436,3 +431,12 @@ void lzss_comp(Handle * f_source, Handle * f_cible, long * delta) {
     free(c);
     free(r);
 }
+
+void lzss::change_scheme(scheme_t new_scheme) {
+    scheme = new_scheme;
+    compute_limits();
+}
+
+lzss::scheme_t lzss::get_scheme() {
+    return scheme;
+}
-- 
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